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Finding the Fourth Proportional to 250,203.80, 345,305.89 and 142,790.00

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Solution

The fourth proportional to 250,203.80, 345,305.89 and 142,790.00 is: 197,064.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,203.80 : 345,305.89 = 142,790.00 : x
  2. Step 2: Convert to fraction form
    250,203.80/345,305.89 = 142,790.00/x
  3. Step 3: Cross multiply
    250,203.80x = 345,305.89 × 142,790.00
  4. Step 4: Simplify right side
    250,203.80x = 49,306,225,949.60
  5. Step 5: Solve for x
    x = 49,306,225,949.60/250,203.80
  6. Step 6: Final answer
    x = 197,064.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.